Mushroom Swiss Burger

Ingredients

• 1 pound ground beef (preferably 80/20 for juiciness)
• 1 cup mushrooms (sliced, preferably cremini or button)
• 4 slices Swiss cheese (for topping)
• 4 units burger buns (toasted)
• 2 cloves garlic (minced)
• 1 medium onion (finely chopped)
• 2 tablespoons olive oil (for sautéing)
• 1 teaspoon salt (to taste)
• 1 teaspoon black pepper (to taste)
• 1 tablespoon Worcestershire sauce (for flavor)